CN101876474B - Method for automatically detecting lack of refrigerant in air-conditioner - Google Patents

Method for automatically detecting lack of refrigerant in air-conditioner Download PDF

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CN101876474B
CN101876474B CN 201010233817 CN201010233817A CN101876474B CN 101876474 B CN101876474 B CN 101876474B CN 201010233817 CN201010233817 CN 201010233817 CN 201010233817 A CN201010233817 A CN 201010233817A CN 101876474 B CN101876474 B CN 101876474B
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refrigerant
temperature
air
air conditioner
compressor
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CN101876474A (en
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涂小平
钟明
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四川长虹空调有限公司
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Abstract

The invention relates to an air-conditioner, in particular to a method for automatically detecting the lack of refrigerant in the air-conditioner. The invention discloses a method for automatically detecting the lack of refrigerant in the air-conditioner in order to solve the problems that the prior art can not automatically detect the fault of the lack of refrigerant or give an alarm to result in high maintenance cost and low maintenance efficiency. The automatic detecting method comprises the following steps of: detecting the difference between the indoor temperature and the temperature of an inner coiled tube, the difference between the outdoor temperature and the temperature of an outer coiled tube and the running current value of a compressor at real time after the air-conditioner runs; and compared with the normal conditions, judging whether the large deviation exists or not so as to judge whether the present refrigerant lacks or not. The invention has the advantages of automatically detecting the fault of the lack of refrigerant in the air-conditioner, immediately giving an alarm, reminding users of the associated maintenance, reducing the maintenance cost and improving theefficiency; and the invention is suitable for detecting whether the air-conditioner lacks of refrigerant or not.

Description

空调器缺少制冷剂的自动检测方法 The air conditioner refrigerant lack automatic detection method

技术领域 FIELD

[0001] 本发明涉及空调器,具体的说是涉及一种空调器缺少制冷剂的自动检测方法。 [0001] The present invention relates to an air conditioner, specifically relates to an automatic method for detecting the lack of an air conditioner refrigerant. 背景技术 Background technique

[0002] 对于空调器来讲,当安装时铜配管等接头处连接不好,或冷凝器、蒸发器、铜配管使用后出现细小破裂而使得制冷剂发生泄漏,将会导致制冷、制热效果很差。 [0002] For the air conditioner concerned, copper pipe joints, etc. When installing a poor connection, or a condenser, an evaporator, a small copper tube rupture after use so that there is refrigerant leakage, it would cause the cooling, heating effect very poor. 但是,目前的空调器系统出现异常时,不能自动进行故障报警,用户不能了解出现的问题。 However, when an exception occurs, the alarm does not automatically fail the current air conditioner system, the user can not understand the problem. 维修人员需先上门了解问题,再返回取相关维修工具,反复来往好几次才能将空调器维修好。 Maintenance personnel must first come to understand the problem, and then return to take the relevant maintenance tools, repeated several times to and from the air conditioner repaired. 增加了维修成本,维修效率低。 Increased maintenance costs, low maintenance efficiency.

发明内容 SUMMARY

[0003] 本发明所要解决的技术问题是:提出一种空调器缺少制冷剂的自动检测方法,解决传统技术不能对缺少制冷剂故障自动检测报警,导致维修成本高、维修效率低的问题。 [0003] The present invention solves the technical problem: automatically propose a method for detecting the lack of an air conditioner refrigerant, the conventional art can not solve the lack of the refrigerant automatic fault detection alarm, resulting in high maintenance costs, low maintenance efficiency.

[0004] 本发明解决上述技术问题所采用的技术方案是:空调器缺少制冷剂的自动检测方法,包括以下步骤: [0004] aspect of the present invention to solve the above technical problem is that: the lack of an automatic method for detecting an air conditioner refrigerant, comprising the steps of:

[0005] a.空调器开始运行后,实时检测室内温度、室外温度、室内冷凝器盘管温度、室外蒸发器盘管温度及压缩机运行电流值; . [0005] a rear air conditioner is running, real-time detection indoor temperature, outdoor temperature, indoor temperature condenser coil, evaporator coil outdoor temperature and operating current value of the compressor;

[0006] b.判断当前空调器运行状态,如果为制冷状态则执行步骤C,如果为制热状态则执行步骤d ; [0006] b determines whether the current operating state of the air conditioner, if the cooling state is executed step C, and if the state is the heating step d.;

[0007] c.在压缩机运行Tl时间后,如果Ta-Tb < A,则将空调器室内风扇速度调至最低速,再运行T2时间后,如果Ta-Tb < B、且Td-Tc < C,且此时检测的压缩机运行电流低于II,则执行步骤e; [0007] c. After the compressor running time Tl, if Ta-Tb <A, then the air conditioner indoor fan speed to minimum speed, run time T2, if Ta-Tb <B, and Td-Tc < C, and at this time the current detection operation of the compressor is less than II, with step E;

[0008] d.在压缩机运行T3时间后,如果Tb-Ta < X,则将空调室内风扇速度调至最低速, 再运行T4时间后,如果Tb-Ta < Y、且Tc-Td < Z,且此时检测的压缩机运行电流低于12,则执行步骤e ; [0008] d. After the compressor operating time T3, if Tb-Ta <X, then the air conditioning indoor fan speed to minimum speed, run time T4, if the Tb-Ta <Y, and Tc-Td <Z , and this time is less than the current detection operation of the compressor 12, step E;

[0009] e.空调器停机,并提示当前缺少制冷剂; . [0009] e air conditioner off, and indicating the current lack of refrigerant;

[0010] 所述Ta为室内温度,Tb为室内冷凝器盘管温度,Tc为室外温度,Td为室外蒸发器盘管温度,Il为空调器制冷状态下的压缩机运行电流阈值,12为空调器制热状态下的压缩机运行电流阈值;所述Tl = 3〜8分钟,T2 = 3〜8分钟,A = 2〜5°C,B = 2〜4°C,C = 1 〜2°C,Il = 2A ;所述T3 = 4 〜9 分钟,T4 = 4 〜9 分钟,X = 3 〜5°C,Y = 3 〜5°C,Z =2 〜3°C,12 = 2· 5A。 [0010] The indoor temperature Ta, Tb of the indoor condenser coil temperature, Tc of the outdoor temperature, Td is the temperature of the outdoor evaporator coil, the current Il threshold value of the compressor to run in the state of an air conditioner refrigerant, the air conditioning 12 compressor operating current threshold value is the heating state; the Tl = 3~8 minutes, T2 = 3~8 min, a = 2~5 ° C, B = 2~4 ° C, C = 1 ~2 ° C, Il = 2A; the T3 = 4 ~9 min, T4 = 4 ~9 min, X = 3 ~5 ° C, Y = 3 ~5 ° C, Z = 2 ~3 ° C, 12 = 2 · 5A.

[0011] 本发明的有益效果是:自动检测空调器缺少制冷剂的故障,及时报警,提醒用户进行相关维修,降低维修成本,提高效率。 [0011] Advantageous effects of the present invention are: to automatically detect the lack of an air conditioner refrigerant failure, timely alarm to alert the user to the relevant service, reduce maintenance costs and improve efficiency.

具体实施方式 Detailed ways

[0012] 下面结合实施例对本发明作进一步的描述。 [0012] The following embodiments in conjunction with embodiments of the present invention will be further described. [0013] 本发明针对传统技术不能对缺少制冷剂故障自动检测报警,导致维修成本高、维修效率低的问题,提出了一种空调器缺少制冷剂的自动检测方法。 [0013] The present invention is directed to the conventional technique can not detect the lack of the refrigerant automatic fault alarm, resulting in high maintenance costs, low maintenance efficiency problem, a method for automatic detection of the lack of an air conditioner refrigerant. 其主要原理是:空调在制冷时,需要将室内的热量通过空调系统带到室外,通过蒸发器和冷凝器分别与室内、室外的空气进行热交换,这样势必形成室内温度和内盘管的温差、室外温度和外盘管的温差,才能进行有效的热交换。 The main principle is: the cooling air conditioning, heat needs to be brought to the room through the outdoor air-conditioning systems, by heat exchange with the evaporator and the condenser are indoor and outdoor air, so that the temperature difference between the room temperature and bound to form the inner coil , the temperature difference between the outdoor temperature and the outer coil, in order to carry out effective heat exchange. 一般情况下,空调系统添注的制冷剂是在一个正常的范围值内的,在空调开始运行一定时间后,室内温度和内盘管的温差、室外温度和外盘管的温差;压缩机运行电流值有一个正常的范围。 In general, air conditioning system refrigerant injection Tim is within a normal range of values, in a predetermined time after the air conditioner starts operating, the temperature difference between the indoor temperature and the temperature difference between the inner coil, the outer coil and outdoor temperature; and operation of the compressor It has a current value of the normal range.

[0014] 当空调系统内的制冷剂发生泄漏,积累到一定程度后,空调的室内温度和内盘管的温差、室外温度和外盘管的温差以及压缩机运行电流值就会大大偏离上述正常范围值。 [0014] When the refrigerant leaks in air conditioning systems, accumulated to a certain extent, the temperature difference between the indoor temperature and air conditioning within the coil, the temperature difference between the current value and the operation of the compressor and the outdoor temperature of the outer coil will be significantly offset from said normal The range of values. 因此通过比较和判断空调的室内温度、内盘管、室外温度、外盘管、压缩机运行电流等参数的变化情况就能检测出空调是否缺少制冷剂。 Therefore, by comparing and determining the temperature of the indoor air conditioning, change of the inner coil, the outdoor temperature, the outer coil, the current operating parameters of the compressor can be detected if the lack of air conditioning refrigerant. 对于空调器的制热状态,原理雷同,只是热量的流动方向相反而已,综上,在空调器运行后,通过实时检测相关参数,并与正常情况作对比,就能判断当前是否缺少制冷剂。 For the heating state of the air conditioner, similar principles, but in reverse. The direction of flow of heat, summary, after the air conditioner is running, by real-time detection parameters, and compare with the normal, will be able to determine whether the current lack of refrigerant.

[0015] 实施例: [0015] Example:

[0016] 本例中所述的制冷剂以R22为例,空调器为IP功率的空调器,具体检测方法如下: [0016] In the present embodiment the refrigerant R22, for example, an air conditioner is an air conditioner power IP, the specific detection method is as follows:

[0017] a.空调器开始运行后,实时检测室内温度(Ta)、室外温度(Tc)、室内冷凝器盘管温度(Tb)、室外蒸发器盘管温度(Td)及压缩机运行电流值; [0017] a. After the start of air conditioner operation, real-time detection of the room temperature (Ta), outdoor temperature (Tc), the indoor condenser coil temperature (Tb), the outdoor evaporator coil temperature (Td) and the operating current value of the compressor ;

[0018] b.判断当前空调器运行状态,如果为制冷状态则执行步骤C,如果为制热状态则执行步骤d ; [0018] b determines whether the current operating state of the air conditioner, if the cooling state is executed step C, and if the state is the heating step d.;

[0019] c.在压缩机运行3〜8分钟后,如果Ta-Tb < 2〜5°C,则将空调器室内风扇速度调至最低速,再运行3〜8分钟后,如果Ta-Tb < 2〜4°C、且TcKTc < 1〜2°C,且此时检测的压缩机运行电流低于2A,则将压缩机及室外风机停机对系统进行保护。 [0019] c. 3~8 minutes after the compressor is running, if Ta-Tb <2~5 ° C, then the air conditioner indoor fan speed to minimum speed, then run 3~8 minutes, if Ta-Tb <2~4 ° C, and TcKTc <1~2 ° C, and at this time the current detection operation of the compressor is less than 2A, it will shut down the compressor and outdoor fan to protect the system. 通过显示屏显示系统异常及该故障代码,提醒用户需要进行相应的维修。 The display system and the display by the abnormal fault code to alert the user need for a corresponding service.

[0020] d.在压缩机运行4〜9分钟后,如果Tb-Ta < 3〜5°C,则将空调室内风扇速度调至最低速,再过jM分钟后,如果Tb-I1a < 3〜5°C、且Tc-Td < 2〜3°C,且此时检测的压缩机运行电流低于2. 5A,则将压缩机及室外风机停机对系统进行保护。 [0020] d. 4~9 minutes after the compressor is running, if Tb-Ta <3~5 ° C, the air conditioning indoor fan speed will be adjusted to the lowest speed, jM After another minute, if Tb-I1a <3~ 5 ° C, and Tc-Td <2~3 ° C, and at this time the current detection operation of the compressor is less than 2. 5A, the compressor and outdoor fan will shut down the system protected. 通过显示屏显示系统异常及该故障代码,提醒用户需要进行相应的维修。 The display system and the display by the abnormal fault code to alert the user need for a corresponding service.

[0021] 上述实施例中的数值范围均是通过长期试验得出的经验值,且由于制冷剂的种类繁多,除了R22还有R410A、R407等,空调器除了IP功率之外还有1. 5P、2P、3P等多种型号, 不同功率的空调器和不同的制冷剂所对应的参数范围会略有不同;再者,上述实施例中的一系列数值范围是基于制冷剂在少于一半的重量的情况下得出的检测结果,剩余制冷剂的多少也会影响数值范围。 [0021] The numerical ranges of the above-described embodiments are empirical values ​​obtained by a long-term test, and since many types of refrigerant, in addition to R22 as well as R410A, R407, etc., in addition to the air conditioner power IP there 1. 5P , 2P, 3P other models, air conditioners of different power and different refrigerants corresponding parameter range will be slightly different; Furthermore, a series of numerical ranges of the above embodiments are based on less than half of the refrigerant by weight obtained in the case of the detection result, the remaining number of the refrigerant can also affect the range of values. 综上,本发明包含但不仅限于上述实施例,本领域的技术人员容易根据上述方案稍作改动而达到同样的技术效果,其皆属于本发明的保护范围。 In summary, the present invention includes but is not limited to the above embodiments, those skilled in the art will readily minor modifications according to the above embodiment and achieve the same technical effect, which belong to the scope of the present invention.

Claims (1)

1.空调器缺少制冷剂的自动检测方法,其特征在于:包括以下步骤:a.空调器开始运行后,实时检测室内温度、室外温度、室内冷凝器盘管温度、室外蒸发器盘管温度及压缩机运行电流值;b.判断当前空调器运行状态,如果为制冷状态则执行步骤c,如果为制热状态则执行步骤d;c.在压缩机运行Tl时间后,如果Ta-Tb <A,则将空调器室内风扇速度调至最低速,再运行T2时间后,如果Ta-Tb < B、且Td-Tc < C,且此时检测的压缩机运行电流低于II,则执行步骤e ;d.在压缩机运行T3时间后,如果Tb-Ta < X,则将空调室内风扇速度调至最低速,再运行T4时间后,如果Tb-Ta < Y、且Tc-Td < Z,且此时检测的压缩机运行电流低于12,则执行步骤e ;e.空调器停机,并提示当前缺少制冷剂;所述Ta为室内温度,Tb为室内冷凝器盘管温度,Tc为室外温度,Td为室外蒸发器盘管温度,Il为空调器 A method for automatic detection of the lack of an air conditioner refrigerant, characterized by: comprising the steps of:. A rear air conditioner is running, real-time detection indoor temperature, outdoor temperature, the indoor condenser coil temperature, the outdoor temperature and the evaporator coil compressor operation current value; B determine the current operating state of the air conditioner, the refrigerant state if executing step c, such as the heating state is performed in step d;. c Tl time after operation of the compressor, if the Ta-Tb <A. , then the air conditioner indoor fan speed to minimum speed, then the operating time T2, if Ta-Tb <B, and Td-Tc <C, and at this time the current detection operation of the compressor is less than II, with step e ; D after the compressor run time T3, if Tb-Ta <X, then the air conditioning indoor fan speed to minimum speed, run time T4, if the Tb-Ta <Y, and Tc-Td <Z, and. At this time, the current detection operation of the compressor is less than 12, step e;. e stop the air conditioner, and indicating the current lack of refrigerant; the indoor temperature Ta, Tb of the indoor condenser coil temperature, Tc of the outdoor temperature , Td is the temperature of the outdoor evaporator coil, Il is the air conditioner 制冷状态下的压缩机运行电流阈值,12为空调器制热状态下的压缩机运行电流阈值;所述Tl = 3 〜8 分钟,T2 = 3 〜8 分钟,A = 2 〜5°C,B = 2 〜4°C,C = 1 〜2°C,I1 =2A ;所述T3 = 4 〜9 分钟,T4 = 4 〜9 分钟,X = 3 〜5°C,Y = 3 〜5°C,Z = 2 〜3°C, 12 = 2. 5A。 Compressor operation current threshold at the cooling state, the current threshold 12 running the air conditioner compressor at a heating state; the Tl = 3 ~8 minutes, T2 = 3 ~8 minutes, A = 2 ~5 ​​° C, B = 2 ~4 ° C, C = 1 ~2 ° C, I1 = 2A; the T3 = 4 ~9 min, T4 = 4 ~9 min, X = 3 ~5 ° C, Y = 3 ~5 ° C , Z = 2 ~3 ° C, 12 = 2. 5A.
CN 201010233817 2010-07-22 2010-07-22 Method for automatically detecting lack of refrigerant in air-conditioner CN101876474B (en)

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